Her mom Goldie Hawn and partner of 30 years this Valentine's Day Kurt Russell make it a habit of not getting into her personal business.

Kurt told People, "We stay out of their way, obviously. But if we find ourselves talking about each other and how we feel about each other, we stand up and we say, 'Wait this is important!' "

He added: "I'm not going to lie about something like that, and we try not to stick our nose in where it doesn't belong, but if we sense that perhaps there is something that someone wants to talk about, I think we're open enough to say a little something if it's right and appropriate."

Although Goldie and Kurt never married, they have been together for three decades and have lasted longer than most Hollywood couples.

When asked advice on how to make a relationship work for that long he replied, "I don't know what secrets there are, and like any couple that's been together for 30 years, we've experienced many, many different angles and avenues of our relationship."

He continued, "I think I'm incredibly lucky to have had the experience, and even more fortunate to have it with the person I have it with."

Kate and Matthew have one son named Bingham, 18 months, and she has another son Ryder, 9, from her previous marriage to Chris Robinson.

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